package com.guofeng.personnelblog.interceptor;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author guofeng
 * @description 身份验证拦截器
 */
@Component
public class LoginInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object o) throws Exception {
        String requestServletPath = request.getServletPath();
        if (requestServletPath.startsWith("/admin")
                && null == request.getSession().getAttribute("loginUser")) {
            request.getSession().setAttribute("errorMsg", "请重新登陆");
            response.sendRedirect(request.getContextPath() + "/admin/login");
            return false;
        } else {
            request.getSession().removeAttribute("errorMsg");
            return true;
        }
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest,
                           HttpServletResponse httpServletResponse,
                           Object o,
                           ModelAndView modelAndView) throws Exception {
    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest,
                                HttpServletResponse httpServletResponse,
                                Object o,
                                Exception e) throws Exception {

    }
}
